I also have a bully dog tuner and I'm not happy. I originally bought it for a 3.5L ecoboost and the throttle sensitivity was way to touchy. It was hard not break traction sometimes. I didn't like the shift points when trying to cruise around (shifted out way to early with the added power). I now have the bd tuner on my raptor (after getting updated to work on the 6.2L). When at three quarter to full throttle, I can hear my valves clattering (ping I think? ). I tried running all the different tunes on various gas from 87 to 93. And still for it. It does it worse on the 93 tune. I think its to much advance in the timing with this tune for 93 octane gas. And I don't want to have use additives to get the octane up. I don't have any other mods done at this time. Thinking about going with a different tuner company.
Damn...what is up with BD? send the BD back and get your money and check out 5 star---------------------------------->